36
|
1
|
|
2 #include <ngx_config.h>
|
|
3 #include <ngx_core.h>
|
|
4 #include <ngx_http.h>
|
|
5
|
|
6
|
|
7 static char *ngx_http_set_status(ngx_conf_t *cf, ngx_command_t *cmd,
|
|
8 void *conf);
|
|
9
|
|
10 static ngx_command_t ngx_http_status_commands[] = {
|
|
11
|
|
12 { ngx_string("stub_status"),
|
|
13 NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
|
|
14 ngx_http_set_status,
|
|
15 0,
|
|
16 0,
|
|
17 NULL },
|
|
18
|
|
19 ngx_null_command
|
|
20 };
|
|
21
|
|
22
|
|
23
|
|
24 ngx_http_module_t ngx_http_stub_status_module_ctx = {
|
58
|
25 NULL, /* preconfiguration */
|
|
26 NULL, /* postconfiguration */
|
36
|
27
|
|
28 NULL, /* create main configuration */
|
|
29 NULL, /* init main configuration */
|
|
30
|
|
31 NULL, /* create server configuration */
|
|
32 NULL, /* merge server configuration */
|
|
33
|
|
34 NULL, /* create location configuration */
|
|
35 NULL /* merge location configuration */
|
|
36 };
|
|
37
|
|
38
|
|
39 ngx_module_t ngx_http_stub_status_module = {
|
58
|
40 NGX_MODULE_V1,
|
36
|
41 &ngx_http_stub_status_module_ctx, /* module context */
|
|
42 ngx_http_status_commands, /* module directives */
|
|
43 NGX_HTTP_MODULE, /* module type */
|
90
|
44 NULL, /* init master */
|
36
|
45 NULL, /* init module */
|
90
|
46 NULL, /* init process */
|
|
47 NULL, /* init thread */
|
|
48 NULL, /* exit thread */
|
|
49 NULL, /* exit process */
|
|
50 NULL, /* exit master */
|
|
51 NGX_MODULE_V1_PADDING
|
36
|
52 };
|
|
53
|
|
54
|
|
55 static ngx_int_t ngx_http_status_handler(ngx_http_request_t *r)
|
|
56 {
|
44
|
57 size_t size;
|
|
58 ngx_int_t rc;
|
|
59 ngx_buf_t *b;
|
|
60 ngx_chain_t out;
|
|
61 ngx_atomic_int_t ap, hn, ac, rq, rd, wr;
|
36
|
62
|
|
63 if (r->method != NGX_HTTP_GET && r->method != NGX_HTTP_HEAD) {
|
|
64 return NGX_HTTP_NOT_ALLOWED;
|
|
65 }
|
|
66
|
|
67 rc = ngx_http_discard_body(r);
|
|
68
|
|
69 if (rc != NGX_OK && rc != NGX_AGAIN) {
|
|
70 return rc;
|
|
71 }
|
|
72
|
58
|
73 r->headers_out.content_type.len = sizeof("text/plain") - 1;
|
|
74 r->headers_out.content_type.data = (u_char *) "text/plain";
|
36
|
75
|
|
76 if (r->method == NGX_HTTP_HEAD) {
|
|
77 r->headers_out.status = NGX_HTTP_OK;
|
|
78
|
|
79 rc = ngx_http_send_header(r);
|
|
80
|
|
81 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
|
|
82 return rc;
|
|
83 }
|
|
84 }
|
|
85
|
44
|
86 size = sizeof("Active connections: \n") + NGX_ATOMIC_T_LEN
|
36
|
87 + sizeof("server accepts handled requests\n") - 1
|
44
|
88 + 6 + 3 * NGX_ATOMIC_T_LEN
|
|
89 + sizeof("Reading: Writing: Waiting: \n") + 3 * NGX_ATOMIC_T_LEN;
|
36
|
90
|
50
|
91 b = ngx_create_temp_buf(r->pool, size);
|
|
92 if (b == NULL) {
|
36
|
93 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
94 }
|
|
95
|
|
96 out.buf = b;
|
|
97 out.next = NULL;
|
|
98
|
|
99 ap = *ngx_stat_accepted;
|
44
|
100 hn = *ngx_stat_handled;
|
36
|
101 ac = *ngx_stat_active;
|
|
102 rq = *ngx_stat_requests;
|
|
103 rd = *ngx_stat_reading;
|
|
104 wr = *ngx_stat_writing;
|
|
105
|
58
|
106 b->last = ngx_sprintf(b->last, "Active connections: %uA \n", ac);
|
36
|
107
|
|
108 b->last = ngx_cpymem(b->last, "server accepts handled requests\n",
|
|
109 sizeof("server accepts handled requests\n") - 1);
|
|
110
|
58
|
111 b->last = ngx_sprintf(b->last, " %uA %uA %uA \n", ap, hn, rq);
|
36
|
112
|
58
|
113 b->last = ngx_sprintf(b->last, "Reading: %uA Writing: %uA Waiting: %uA \n",
|
42
|
114 rd, wr, ac - (rd + wr));
|
36
|
115
|
|
116 r->headers_out.status = NGX_HTTP_OK;
|
|
117 r->headers_out.content_length_n = b->last - b->pos;
|
|
118
|
|
119 b->last_buf = 1;
|
|
120
|
|
121 rc = ngx_http_send_header(r);
|
|
122
|
|
123 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
|
|
124 return rc;
|
|
125 }
|
|
126
|
|
127 return ngx_http_output_filter(r, &out);;
|
|
128 }
|
|
129
|
|
130
|
|
131 static char *ngx_http_set_status(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
132 {
|
|
133 ngx_http_core_loc_conf_t *clcf;
|
|
134
|
|
135 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
|
|
136 clcf->handler = ngx_http_status_handler;
|
|
137
|
|
138 return NGX_CONF_OK;
|
|
139 }
|